as5046 austriamicrosystems, as5046 Datasheet - Page 6

• Manufacturer Part Number: as5046
• Description: Programmable 12-bit 360? Magnetic Angle Encoder With Absolute 2-wire Serial And Analog Interfaces
• Manufacturer: austriamicrosystems

AS5046 Programmable 360° Magnetic Angle Encoder – Preliminary Data Sheet
5.4
(operating conditions: T
unless otherwise noted)
Two-pole cylindrical diametrically magnetised source:
5.5
(operating conditions: T
unless otherwise noted)
Revision 1.0
Parameter
Diameter
Thickness
Magnetic input field amplitude
Magnetic offset
Field non-linearity
Input frequency
(rotational speed of magnet)
Displacement radius
Recommended magnet material
and temperature drift
Parameter
Resolution
Integral non-linearity (optimum)
Integral non-linearity (optimum)
Integral non-linearity
Differential non-linearity
Transition noise
Power-on reset thresholds
On voltage; 300mV typ. hysteresis
Off voltage; 300mV typ. hysteresis
Power-up time,
Until offset compensation finished,
OCF = 1, Angular Data valid
System
absolute output : delay of ADC and
DSP
Magnetic Input Specification
Electrical System Specifications
1)
propagation
1)
1)
1)
amb
amb
delay
= -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation)
1)
1)
= -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation)
Symbol
d
t
B
B
f
f
Disp
mag
mag_abs
mag_inc
mag
pk
off
Symbol
RES
INL
INL
INL
DNL
TN
V
V
t
t
PwrUp
delay
on
off
opt
temp
Min
Min
1.37
1.08
2.5
45
4
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Typ
2.2
1.9
Typ
-0.035
-0.12
6
Max
10
± 0.5
± 0.9
± 1.4
± 0.176
0.06
0.03
2.9
2.6
20
80
96
384
Max
± 10
0.25
166
75
10
5
Unit
Unit
bit
deg
deg
deg
deg
Deg
RMS
V
V
ms
µs
mm
%/K
mm
mm
mT
mT
Hz
Hz
%
Note
Recommended magnet: Ø 6mm x 2.5mm for cylindrical
magnets
Required vertical component of the magnetic field strength on
the die’s surface, measured along a concentric circle with a
radius of 1.1mm
Constant magnetic stray field
Including offset gradient
Absolute mode: 600 rpm @ readout of 1024 positions
(see table 6)
Incremental mode: no missing pulses at rotational speeds of
up to 10,000 rpm (see table 6)
Max. offset between defined device center and magnet axis
NdFeB (Neodymium Iron Boron)
SmCo (Samarium Cobalt)
Note
0.352 deg
Maximum error with respect to the best line fit.
Verified at optimum magnet placement, T
Maximum error with respect to the best line fit.
Verified at optimum magnet placement ,
T
Best line fit = (Err
Over displacement tolerance with 6mm diameter magnet,
T
10bit, no missing codes
1 sigma, fast mode (pin MODE = 1)
1 sigma, slow mode (pin MODE=0 or open)
DC supply voltage 3.3V (VDD3V3)
DC supply voltage 3.3V (VDD3V3)
fast mode (pin MODE=1)
slow mode (pin MODE=0 or open)
fast mode (pin MODE=1)
slow mode (pin MODE=0 or open)
amb
amb
= -40 to +125°C
= -40 to +125°C
max
– Err
min
) / 2
amb
=25 °C.
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